Deep-Sea Larvae Unveil Hybrid Photoreceptors, Redefining Twilight Vision
Researchers have identified a previously unknown photoreceptor in larval deep-sea fish that combines cone-like molecular machinery with rod-like structure, creating a twilight-optimized cell that challenges the long-held view that vertebrate vision relies solely on cones for bright light and rods for darkness. The finding, observed in Maurolicus muelleri and Maurolicus mucronatus larvae, could inform low-light imaging technologies and offer new avenues for understanding human eye conditions such as glaucoma.